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Solar Activity Report for 12/7/03

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  • David
    ** Aurora Watch In Effect ** While conditions have been fairly quiet for the last 24 hours, that will soon be changing as a coronal hold solar wind stream
    Message 1 of 1 , Dec 7, 2003
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      ** Aurora Watch In Effect **

      While conditions have been fairly quiet for the last 24 hours, that
      will soon be changing as a coronal hold solar wind stream starts
      impacting Earth's magnetosphere either Monday or Tuesday. This is a
      pretty large coronal hole, so the effects should be pronounced. As
      always, the final result will depend upon which oriention the
      interplanetary magnetic field is carrying at the time of the arrival
      of the high speed solar wind. The IMF has been holding steadily
      south-pointing for several days. If that persists, the geomagnetic
      activity will be substantially higher. Sunspot region 510 got off a
      couple of parting shots as it rotated out of view over the western
      limb of the solar disk in the form of two M-class flares.

      The current solar and geomagnetic conditions are :

      NOAA sunspot number : 53
      SFI : 92
      A index : 17
      K index : 2

      Solar wind speed : 480.1 km/sec
      Solar wind density : 9.4 protons/cc
      Solar wind pressure : 3.6 nPa

      IMF : 7.5 nT
      IMF Orientation : 7.2 nT South

      Conditions for the last 24 hours :
      No space weather storms were observed for the past 24 hours.

      Forecast for the next 24 hours :
      No space weather storms are expected for the next 24 hours.

      Solar activity forecast :
      Solar activity is expected to persist at low levels.

      Geomagnetic activity forecast :
      The geomagnetic field is expected to be increasingly more disturbed
      through the period. A high speed solar wind stream is anticipated to
      bring active to minor storm conditions, beginning near midday on 09
      December.

      Recent significant solar flare activity :
      06-Dec-2003 1546Z M2.0
      06-Dec-2003 1120Z M1.3
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